Complete the eLesson on whats inside a cell got to the JacPlus site or use the direct link in the course guide above. Hand in the completed worksheet
Cells
Measurements of small objects.
Long distance are measured in kilometres (km) or metres (m). Smaller distances or lengths are measured in centimetres (cm 1/100 metres) or millimetres (mm 1/ 1000 metres). When measuring cells we use micrometres (um 1/1000000 metres) or nanometres. (nm 1 / 1000000000 metres). This means there are one thousand micrometres in a millimetre and one million nanometres in a millimetre.
Measuring the Field of View of our microscopes
On Low Power
The magnification was Ocular X Lens = 10 X 4 = 40X
The distance across the field of view in mm was 5mm
On Medium Power
The magnification was Ocular X Lens = 10 X 10 = 100X
The distance across the field of view in mm was 1.5 mm
On High Power
The magnification was Ocular X Lens = 10 X 40 = 400X
The distance across the field of view in mm was 0.25 mm
Measuring the size of a red blood cell
Focus the blood cell on medium power. Count the number of cells that fits across the Field of View.
Divide the size of the medium power field of view by the number of cells.
I found that about 200 cells fitted across the medium power field of view.
Therefore the size of one cell is 1.5/200 = 0.00075 mm
Onion cell slides
Do ques 1 to 5 p 141
HMWK activity 5.1 and 5.1
Transport in Cells
Water and nutrients are transported from the roots or leaves by specialised cells called xylem (water transport) and Phloem ( sugar and nutrient transport).
Once the water arrives at the cell the water diffuses into the cell along with the nutrients. Waste products diffuse out.
In plants there are different types of cells we say they are specialised. These cells perform a special function.
In the leaf palisade cells contain many chloroplasts. The chloroplasts are the sites of photosynthesis.
Another cell type is the guard cells. Their job is to let gas out and in to the leaf while preventing too much water loss due to transpiration.
Copy Fig 5.2.5, 5.2.6. 5.2.11 p 138
Celery Demonstration
The celery was cut longitudinally and one side placed into red dye the other side into blue dye.
We observed blue patches on the leaves of the celery the was in the blue dye and red on the other side.
This shows the water is travelling up special cells – xylem cells.
We also saw distinct blue patches in the transverse section of the stem.
Ques
7,10,11,13,15,17, 19, p 141
Animal Cells
The structure of an animal cell is different to that of a plant cell.
Animal cells do not have:
Cell walls
Large vacuoles
Chloroplasts
This means that animal cells can have a wide range of shapes and sizes.
Some examples include : blood cells, muscle cells, bone cells, nerve cells, oesophagus cells.
Exercise:
Use the microscope to examine and then draw cells found in 3 different parts of our digestive system. Diagrams need to be labelled, in pencil, 10 lines big and have the cell sizes calculated.
Use your text book and online resources to find out
how viruses reproduce - a good answer will have an animation and you will be able to use the terms chromosomes and DNA, where on or in the host cell they reproduce, how do we use them?
how bacteria reproduce - a good answer will have an animation and you will be able to use the terms chromosomes and DNA, binary fission, asexual reproduction, sexual reproduction. Where on or in the host cell they reproduce, how do we use them?
You will be teaching the rest of the class about what you have learnt. You will need to consider
what are the main things you want them to know
How will you know they have understood
how will you relate what you are teaching them to their lives?
headstart booklet 2015 just use the headstart booklet
headstart test
Class notes
TEXTBOOK
HOMEWORK
Discovery of cells
Microscopes
Or Introducing Cells V574 INT
Or The Magic of Cells V574.57 MAG
Web activity – parts of the microscope
http://www.media.pearson.com.au/schools/cw/au_sch_whalley_sf1_1/dnd/4_Compound.html
Interactivities-Microscope Parts (int-0205)
http://www.youtube.com/watch?v=C66lpodO208
Cells rap
https://www.youtube.com/watch?v=-zafJKbMPA8&feature=youtu.be
Download this from edmodo - ask your teacher for your class code.
Microscope, magnification, electron microscope, light microscope, nm, mm
Types of microscopes
Microscope components Magnification
Investigation Hay infusion Booklet page 6
Monocular, binocular, stereo, microbiologist, parts of the microscope
Size of cells, Cell types, Cell components
Five Kingdoms
Booklet page 7
Sketching cells, Preparing Slides
Wet mounts, Staining specimens
Investigation 3.4 p 74 Pond water
Investigation 3.5 p74 Peel, squash & stain
Textbook Ques: p 74 1,2
Booklet page 8 - 9
Specimen, coverslip, staining
Similarities and differences in animal cells
(int-0206)
Cilia, flagellum
Organelles/Cells/Tissues/Organs/Systems
Stem cells
Cell rap
http://www.youtube.com/watch?v=-zafJKbMPA8
Organelles, tissues, organs, systems
Stem cells
Differences in plant cells
Textbook Ques: p 85 1-4,5ac,6
Xylem, Phloem, Guard &Epidermal cells
Transport systems in plants
Textbook Ques: p 91 1-10
Worksheet 3.6 p91
Translocation, Stomata, Transpiration
Vascular bundles
Reproduction of cells/mitosis
Textbook Ques: p 95 1,3,4,6-11
Chromosomes, Mitosis, Clones
eLesson p108- A Cure (eles-0070)
eBook Individual Pathways p108
-Activity 3.1 (doc-6048) -Activity 3.2 (doc-6049)
Looking Back p109-110
Class notes
Complete the eLesson on whats inside a cell got to the JacPlus site or use the direct link in the course guide above.Hand in the completed worksheet
Cells
Measurements of small objects.
Long distance are measured in kilometres (km) or metres (m). Smaller distances or lengths are measured in centimetres (cm 1/100 metres) or millimetres (mm 1/ 1000 metres). When measuring cells we use micrometres (um 1/1000000 metres) or nanometres. (nm 1 / 1000000000 metres). This means there are one thousand micrometres in a millimetre and one million nanometres in a millimetre.Measuring the Field of View of our microscopes
On Low Power
The magnification was Ocular X Lens = 10 X 4 = 40XThe distance across the field of view in mm was 5mm
On Medium Power
The magnification was Ocular X Lens = 10 X 10 = 100XThe distance across the field of view in mm was 1.5 mm
On High Power
The magnification was Ocular X Lens = 10 X 40 = 400XThe distance across the field of view in mm was 0.25 mm
Measuring the size of a red blood cell
Focus the blood cell on medium power. Count the number of cells that fits across the Field of View.Divide the size of the medium power field of view by the number of cells.
I found that about 200 cells fitted across the medium power field of view.
Therefore the size of one cell is 1.5/200 = 0.00075 mm
Onion cell slides
Do ques 1 to 5 p 141
HMWK activity 5.1 and 5.1
Transport in Cells
Water and nutrients are transported from the roots or leaves by specialised cells called xylem (water transport) and Phloem ( sugar and nutrient transport).
Once the water arrives at the cell the water diffuses into the cell along with the nutrients. Waste products diffuse out.
In plants there are different types of cells we say they are specialised. These cells perform a special function.
- In the leaf palisade cells contain many chloroplasts. The chloroplasts are the sites of photosynthesis.
- Another cell type is the guard cells. Their job is to let gas out and in to the leaf while preventing too much water loss due to transpiration.
Copy Fig 5.2.5, 5.2.6. 5.2.11 p 138Celery Demonstration
The celery was cut longitudinally and one side placed into red dye the other side into blue dye.
We observed blue patches on the leaves of the celery the was in the blue dye and red on the other side.
This shows the water is travelling up special cells – xylem cells.
We also saw distinct blue patches in the transverse section of the stem.
Ques
7,10,11,13,15,17, 19, p 141
Animal Cells
The structure of an animal cell is different to that of a plant cell.Animal cells do not have:
- Cell walls
- Large vacuoles
- Chloroplasts
This means that animal cells can have a wide range of shapes and sizes.Some examples include : blood cells, muscle cells, bone cells, nerve cells, oesophagus cells.
Exercise:
Use the microscope to examine and then draw cells found in 3 different parts of our digestive system. Diagrams need to be labelled, in pencil, 10 lines big and have the cell sizes calculated.
Use your text book and online resources to find out